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An Equal Opportunity Employer M/F/V/H
Sent Via Email: [email protected]
File No. 16.0062335.52
May 4, 2018 Ms. Abigail Hendershott Acting District Supervisor – Remediation and Redevelopment Division Michigan Department of Environmental Quality (MDEQ) 350 Ottawa Avenue NW #10 Grand Rapids, MI 49503 Re: Wolverine World Wide, Inc. – House Street CSM Update and Status Report Dear Ms. Hendershott: On behalf of Wolverine World Wide, Inc. (Wolverine), this letter responds to your April 4, 2018 letter entitled House Street Per- and Polyfluoroalkyl Substance (PFAS) Investigation – 1855 House Street, Rockford, Kent County, Michigan, Conceptual Site Model Update and Status Report. These responses are presented in order by the bullet point listing used in your letter.
1) Additional soil sampling at the site is being planned under the EPA UAO Work Plan (WP). Once this WP has been approved by the EPA, R&W/GZA will submit a supplemental letter to the MDEQ better describing the PFAS sampling that will be conducted in conjunction with the EPA WP at the House Street parcel. Regarding the soil sampling requested at the MDOT property, the CSM relates specifically to the House Street parcel. Additional soil sampling is already planned for the MDOT property. The verification sampling was previously proposed to the MDEQ on January 26, 2018. Since that time the EPA has also engaged with Wolverine on the MDOT parcel. R&W/GZA is currently evaluating EPA requirements for this parcel as well. Once a combined sampling effort can be approved, this task will be completed.
2) The CSM was completed for the House Street parcel only. The investigation of the MDOT parcel has been and will continue to be handled separately. The excavation and earthwork activities that have taken place on the MDOT property have not identified tannery-related waste similar to that found on the House Street parcel. The solid debris (metal, leather, buffing dust) identified on the MDOT parcel is distinctly different than that on the House Street parcel (tannery related wastewater treatment residuals).
Enclosed is an aerial showing the MDOT parcel with the solid waste removal area and the “trenches” shown on the 1965 aerial photograph overlain. An aerial photograph from 1960/1961 shows general soil disturbances in the area of the solid waste debris. The 1968 aerial photograph shows cleared land in the area covered with low lying vegetation. The areas of disturbance do not appear to be consistent with the types of trenching completed on the House Street parcel. Again, the EPA has engaged with Wolverine on the MDOT parcel. Once the EPA required scope
May 4, 2018 16.0062335.52
Wolverine – House Street CMS Comments Response Page | 2
Proactive by Design
An Equal Opportunity Employer M/F/V/H
has been established for the MDOT parcel this issue will be revisited to determine additional steps, if any, are required by the MDEQ.
3) At your request, R&W/GZA recently sampled six additional residential wells along the west side of Freska Lake. Those analytical results are currently being received. Once all are available, R&W/GZA will provide an additional response to bullet #3. Note, however, no wells north-northwest of the House Street parcel have detections of PFOS/PFOA above the MDEQ 70 ppt criteria.
4) Sampling of surface water has been discussed extensively at numerous DEQ/Wolverine meetings. R&W/GZA has indicated that sampling for PFOA and PFOS in targeted surface water bodies (i.e. the listed Freska Lake, Duck Lake, Clear Bottom Lake, and the ponds in Rogue River Park) is not beneficial investigation without additional context, in particular PFOS concentrations in comparable surface water bodies. We propose working with the MDEQ surface water division and/or the Department of Natural Resources to identify appropriate surface water bodies so “background” sampling at other surface water bodies throughout the area may be conducted by the agencies in conjunction with the targeted sampling listed above.
5) It appears the drainage ditch/swale from Freska Lake to the Rogue River traverses five parcels with residential homes. R&W/GZA believes shallow surface drainage is not sufficient to warrant sampling of these wells.
6) While only PFOS and PFOA are currently regulated, a figure illustrating the PFAS impact in the House Street area (by detection ranges) is enclosed.
7-10) Regarding the requested cross-section plume length; cross-section MW-11 – MW-10 nest – MW-9 nest transect; cross-section MW-21 – MW-15 nest – MW-19 nest transect; and Figure B revisions, R&W/GZA is working on these as data is available and the investigation progresses. The intent is to include these updated cross sections in the next submittal to the MDEQ. We are proposing submittal of tri-annual progress report summaries to the MDEQ every four months as the investigation continues. The next of these will be submitted mid-June 2018.
11) Ground elevations for MW-15 nest, MW-19 nest, and MW-21 nest are enclosed.
12) R&W/GZA believes there is not sufficient data or reason to provide the information requested in bullet no. 12. The information regarding residential well depth is irregular, insufficient (logs are only available for approximately 30% of wells), and relies on drillers well logs, not geologic well records. R&W/GZA is in the process of installing numerous groundwater monitoring wells for the purpose of defining the PFOS/PFOA plume. Using partial residential well information poses the risk of improper or skewed interpretation.
13/14) As you know, R&W/GZA is diligently working to install monitoring wells to delineate the PFOS/PFOA plume (over 30 have already been installed). We prefer not to utilize residential well sampling to define the plume.
As noted above, many of the items summarized in your April 4 letter are on-going or will be addressed in either supplemental submittals associated with the CSM or stand-alone documents for individual tasks (i.e. specifically the MDOT property).
May 4, 2018 16.0062335.52
Wolverine – House Street CMS Comments Response Page | 3
Proactive by Design
An Equal Opportunity Employer M/F/V/H
If you have any questions, please feel free to contact us.
Very truly yours,
Rose & Westra, a Division of GZA GeoEnvironmental, Inc.
Mark A. Westra Loretta J. Powers Associate Principal Senior Project Manager/Consultant Reviewer maw/ljp c: Mr. Dave Latchana – Wolverine Worldwide, Inc. via email [email protected] Mr. John V. Byl – Warner Norcross & Judd LLP via email [email protected] Enclosures: MDOT Parcel Aerial Total PFAS Concentration Mapping Monitoring Well Elevations
J:\62000\623xx\62335.52 - House St Pre-Inv\CSM_WP_REPORT\CSM2018\MDEQ-CSMUpdate-Comments-Response.docx
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© 2
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- GZA
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0 2,000 4,0001,000
Scale in Feet
UNLESS SPECIFICALLY STATED BY WRITTEN AGREEMENT, THIS DRAWING IS THE SOLE PROPERTY OFGZA GEOENVIRONMENTAL, INC. (GZA). THE INFORMATION SHOWN ON THE DRAWING IS SOLELY FORUSE BY GZA'S CLIENT OR THE CLIENT'S DESIGNATED REPRESENTATIVE FOR THE SPECIFIC PROJECTAND LOCATION IDENTIFIED ON THE DRAWING. THE DRAWING SHALL NOT BE TRANSFERRED, REUSED,COPIED, OR ALTERED IN ANY MANNER FOR USE AT ANY OTHER LOCATION OR FOR ANY OTHERPURPOSE WITHOUT THE PRIOR WRITTEN CONSENT OF GZA. ANY TRANSFER, REUSE, OR MODIFICATIONTO THE DRAWING BY THE CLIENT OR OTHERS, WITHOUT THE PRIOR WRITTEN EXPRESS CONSENT OFGZA, WILL BE AT THE USER'S SOLE RISK AND WITHOUT ANY RISK OR LIABILITY TO GZA.
Rose & Westra, a Division of GZA601 Fifth Street NW, Suite 102Grand Rapids, Michigan 49504
WATER WELL PFAS DATAHOUSE STREET DISPOSAL AREA
PREPARED FOR:WOLVERINE WORLD WIDE, INC.
PROJ MGR: LIP
DESIGNED BY: JC
REVIEWED BY: LIP
DRAWN BY: JC
CHECKED BY: LIP
SCALE: AS SHOWN
DATE:05-1-18
PROJECT NO.16.0062335.52
REVISION NO.
FIGURE
1
NO. ISSUE/DESCRIPTION BY DATE
GZA GeoEnvironmental, Inc.Engineers and Scientists
www.gza.com
LegendSurface Water
Extent of PFAS Distribution (ng/L)"/ ND
"/ Greater Than DL to 100
"/ Greater Than 100 to 1,000
"/ Greater Than 1,000 to 10,000
"/ Greater Than 10,000
.
TABLE 1SUMMARY OF WELL CONSTRUCTION INFORMATION
HOUSE ST DISPOSAL AREAPLAINFIELD TOWNSHIP, MICHIGAN
16.0062335.52Page 1 of 1
WELL ID
GROUND SURFACE
ELEVATION, FT
TOP OF CASING
ELEVATION, FT
DEPTH TO TOP OF WELL SCREEN, FT
DEPTH TO BOTTOM OF
WELL SCREEN, FT
TOTAL WELL DEPTH, FT
TOP OF WELL SCREEN
ELEVATION, FT
BOTTOM OF WELL SCREEN
ELEVATION, FT
MW‐1S 788.8 790.01 68.4 73.1 75 720.4 715.7MW‐1D 788.7 790.73 170.1 174.7 175 618.6 614MW‐2S 797.6 799.66 78.5 83.1 83.4 719.1 714.5MW‐3P 788.1 790.62 19 24 25 769.1 764.1MW‐3S 787.5 790.07 69.7 74.6 75.1 717.8 712.9MW‐4S 782.3 784.88 71.1 75.7 76 711.2 706.6MW‐5P 778.9 781.45 17.1 21.8 22.3 761.8 757.1MW‐5S 778.8 781.61 61.9 66.6 67.1 716.9 712.2MW‐5D 779.1 781.84 188 198 198.5 591.1 581.1MW‐6S 770.3 772.76 57.1 61.8 62.3 713.2 708.5MW‐6D 770.6 773.33 155 160 162 615.6 610.6MW‐7S 788.9 791.09 70.1 74.7 75 718.8 714.2MW‐8 742.2 745.09 27.7 32.7 36 714.5 709.5MW‐9S 817.8 820.2 26 31 31 791.8 786.8MW‐9M 817.9 820.66 126 131 131 691.9 686.9MW‐9D 818.2 820.88 203 208 220 615.2 610.2MW‐10S 777.2 780.06 49 59 60 728.2 718.2MW‐10M 777.7 780.64 125 130 131 652.7 647.7MW‐10D 778.1 780.94 185 190 192 593.1 588.1MW‐11S 742.1 744.78 21 31 31.5 721.1 711.1MW‐11M 742.3 744.96 95 100 100 647.3 642.3MW‐11D 742.1 744.75 150 155 162 592.1 587.1MW‐15S 638 640.98 7 17 17 631 621MW‐15I 637.5 640.71 45 50 50 592.5 587.5MW‐15D 639.7 642.86 108 118 118 531.7 521.7MW‐19S 677.8 680.83 58 61 61 619.8 616.8MW‐19D 677.7 680.79 85 95 95 592.7 582.7MW‐21S 645.8 648.67 10 20 20 635.8 625.8MW‐21I 645.9 648.85 59 64 64 586.9 581.9MW‐21D 645.7 648.38 75.8 85.8 85.8 569.9 559.9
\\gzagr1\Jobs\62000\623xx\62335.52 ‐ House St Pre‐Inv\CSM_WP_REPORT\CSM2018\May2018Response\TABLE1_WELL_INF_UPDATE GZA GEOENVIRONMENTAL, INC.
